581061 has 16 divisors (see below), whose sum is σ = 854784. Its totient is φ = 348864.

The previous prime is 581047. The next prime is 581069. The reversal of 581061 is 160185.

It is not a de Polignac number, because 581061 - 2⁵ = 581029 is a prime.

581061 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1675 + ... + 1991.

It is an arithmetic number, because the mean of its divisors is an integer number (53424).

2⁵⁸¹⁰⁶¹ is an apocalyptic number.

It is an amenable number.

581061 is a deficient number, since it is larger than the sum of its proper divisors (273723).

581061 is a wasteful number, since it uses less digits than its factorization.

581061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 581061 is about 762.2735729382. The cubic root of 581061 is about 83.4463302666.

The spelling of 581061 in words is "five hundred eighty-one thousand, sixty-one".